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不同水分、施氮量对土壤中硝态氮含量分布的影响
引用本文:刘微,赵同科,王丽英.不同水分、施氮量对土壤中硝态氮含量分布的影响[J].华北农学报,2006,21(3):27-30.
作者姓名:刘微  赵同科  王丽英
作者单位:1. 河北农业大学,资源环境学院,河北,保定,071001
2. 北京市农林科学院植物营养与资源研究所,北京,100089;河北省农林科学院农业资源环境研究所,河北,石家庄,050051
3. 河北省农林科学院农业资源环境研究所,河北,石家庄,050051
基金项目:河北省农林科学院科研项目
摘    要:通过田间试验,研究了不同氮肥用量和灌水量情况下土壤中硝态氮的动态分布。结果表明,土壤剖面的硝态氮含量随着施氮量的增加而增加,在同一施氮量水平下,随着土壤深度的增加,土壤中硝态氮含量递减。在冬小麦的整个生育期中,拔节期的追肥灌水有助于硝态氮向土壤深处移动,甚至有可能淋洗出根层,对地下水产生影响。

关 键 词:冬小麦  土壤  硝态氮  含量  分布
文章编号:1000-7090(2006)03-0027-04
收稿时间:2005-08-26
修稿时间:2005-08-26

Effect of Irrigation and Nitrogen Fertilizer on NO-3-N Content and Distribution in Soil
LIU Wei,ZHAO Tong-ke,WANG Li-ying.Effect of Irrigation and Nitrogen Fertilizer on NO-3-N Content and Distribution in Soil[J].Acta Agriculturae Boreali-Sinica,2006,21(3):27-30.
Authors:LIU Wei  ZHAO Tong-ke  WANG Li-ying
Institution:1 .College of Resource and Environment, Agriculture University of Hebei, Baoding 071001 ,China; 2. Institute of Plant Nutrition and Resource, Beijng Academy of Agricultural and Forestry Sciences, Beijing 100089,China;3.Institute of Agriculture Resource and Environment,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051 China
Abstract:Based on the field experiments of nitrogen fertilizer and irrigation applied to winter wheat,the effects of quantity on its dynamic distribution of soil NO_3~--N were studied.The results indicated that the content of soil NO_3~-N increased with increasing amount of N fertilizer application,and under the same level of nitrogen fertilizer,from top soil to deep layer of soil,the content of soil NO~-_3-N was decreased.According to the amount of NO~-_3-N in the deep layer soil during the growth of winter wheat,irrigation and fertilization help to NO~-_3-N leaching,so it was very easy to seep into ground-water and pollute the environment.
Keywords:Winter wheat  Soil  NO_3~--N  Content  Distribution
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